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Finding the Fourth Proportional to 613,820.46, 919,158.58 and 512,366.26

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Solution

The fourth proportional to 613,820.46, 919,158.58 and 512,366.26 is: 767,237.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,820.46 : 919,158.58 = 512,366.26 : x
  2. Step 2: Convert to fraction form
    613,820.46/919,158.58 = 512,366.26/x
  3. Step 3: Cross multiply
    613,820.46x = 919,158.58 × 512,366.26
  4. Step 4: Simplify right side
    613,820.46x = 470,945,839,385.72
  5. Step 5: Solve for x
    x = 470,945,839,385.72/613,820.46
  6. Step 6: Final answer
    x = 767,237.12

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.